Disable MachO TBD write tests for Windows.

The tests are failing on the windows bots. I am disabling them for now.
This is a followup to r356820.

llvm-svn: 356826
diff --git a/llvm/unittests/TextAPI/TextStubV1Tests.cpp b/llvm/unittests/TextAPI/TextStubV1Tests.cpp
index 1388ed2..c34656c 100644
--- a/llvm/unittests/TextAPI/TextStubV1Tests.cpp
+++ b/llvm/unittests/TextAPI/TextStubV1Tests.cpp
@@ -149,6 +149,8 @@
   EXPECT_EQ(0U, File->reexportedLibraries().size());
 }
 
+// Disable test for windows.
+#ifndef _WIN32
 TEST(TBDv1, WriteFile) {
   static const char tbd_v1_file3[] =
       "---\n"
@@ -215,6 +217,7 @@
   EXPECT_EQ(FileType::TBD_V1, File->getFileType());
   EXPECT_EQ(PlatformKind::macOS, File->getPlatform());
 }
+#endif // _WIN32
 
 TEST(TBDv1, Platform_iOS) {
   static const char tbd_v1_platform_ios[] = "---\n"
diff --git a/llvm/unittests/TextAPI/TextStubV2Tests.cpp b/llvm/unittests/TextAPI/TextStubV2Tests.cpp
index e8792c1..1cb8b73 100644
--- a/llvm/unittests/TextAPI/TextStubV2Tests.cpp
+++ b/llvm/unittests/TextAPI/TextStubV2Tests.cpp
@@ -173,6 +173,8 @@
   EXPECT_EQ(0U, File->reexportedLibraries().size());
 }
 
+// Disable test for windows.
+#ifndef _WIN32
 TEST(TBDv2, WriteFile) {
   static const char tbd_v2_file3[] =
       "--- !tapi-tbd-v2\n"
@@ -225,6 +227,7 @@
   EXPECT_FALSE(Result);
   EXPECT_STREQ(tbd_v2_file3, Buffer.c_str());
 }
+#endif // _WIN32
 
 TEST(TBDv2, Platform_macOS) {
   static const char tbd_v1_platform_macos[] = "--- !tapi-tbd-v2\n"